High-frequency noise in electric vertical takeoff and landing(eVTOL)aircraft systems can induce oscillations in the control system

leading to increased control error. The extended state observer(ESO)in conventional active disturbance rejection control(ADRC)

operating at high gains

is highly sensitive to electromagnetic and mechanical vibration noise generated by the densely packed power electronics within eVTOL vehicles. Amplified by the ESO

these high-frequency noise components readily trigger system oscillations. This inherent noise-bandwidth trade-off dilemma has become a primary bottleneck limiting the wider application of ADRC in eVTOL motor drive systems. To address this challenge

an improved extended state observer(IESO)was proposed that introduces a low-pass filter to suppress high-frequency noise interference while incorporating a disturbance regulation coefficient to enhance the accuracy of disturbance estimation. Combined with a feedforward compensator constructed through decoupling of known disturbance models

the dependency of ADRC on bandwidth gain was reduced by the approach. Consequently

an enhanced active disturbance rejection control(EADRC)was designed

and the stability and global uniform boundedness of EADRC were rigorously proven. Experimental results finally validate feasibility and effectiveness of EADRC under complex operating conditions

including measurement noise and abrupt changes in control parameters.